Algebra-2

Question Analysis
This problem assesses the understanding of the coordinates on the unit circle for a given angle.

Key Concept Explanation
The coordinates of any point on the unit circle can be expressed as . For an angle of , which is in the third quadrant, both the cosine and sine values will be negative.

Step-by-step Solution
1. Identify the reference angle for : .
2. Determine the cosine and sine values for : and

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